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    <title>Document</title>
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<body>
    <script>
        function hue(a = true) {


            if (a) {
                let arr = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f']
                let str = '#'
                for (let i = 1; i <= 6; i++) {
                    let random = Math.floor(Math.random() * arr.length)
                    str += arr[random]
                }
                return str

            } else {
                let r = Math.floor(Math.random() * 256)
                let g = Math.floor(Math.random() * 256)
                let b = Math.floor(Math.random() * 256)
                return `rgb(${r},${g},${b})`
            }
        }
        console.log(hue());
        // 复杂数据类型 赋值的是 地址不是值 地址中值改变了 那么obj1里面的值也会改变
        // let obj1 = {
        //     uname: 'pink'
        // }
        // let obj2 = obj1
        // obj2.uname = 'red'
        // console.log(obj1.uname);
    </script>
</body>

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